I made up a simple tool from a 1`piece of strapping about 12`long.
Take the strap and hammer it out to a taper. Then grind it smooth 80 grit should work fine or a file will do. radius the corners a little and then put the strap in a vise and heat the end up about 1/2" and hammer it to a 90 deg. bend. then take the piece out of the vise and hammer the end over 180 degs. I put a small piece of metal into the folded over area to create a gap. Now you've got a hooked tool that you can use to ease the lip open to remove the strip. If you go easy it works well. I also use this tool to open up damaged fender beads that need to be welded.
Hope this Helps: The Old Tinbasher
P.S. I also have a phone # of a guy in California that make the right shaped moulding for the inside edge, if you need it.